﻿<p><em>IfcLightSourceGoniometric</em> defines a light source for which exact lighting data is available. It specifies the type of a light emitter, defines the position and orientation of a light distribution curve and the data concerning lamp and photometric information.</p> 

<p>Figure 2 shows an example of a light emitter having two light sources (of type <em>IfcLightSourceGoniometric</em>).</p> 

<table>
<tr><td><img src="../../../figures/ifclightsourcegoniometric_fig1.gif" alt="Example" width="587" height="366" border="0"></td></tr>
<tr><td><p class="figure">Figure 2 &mdash; Light source goniometric</p></td></tr>
</table>


<blockquote class="history"> 
HISTORY&nbsp; New entity in IFC2x2.
</blockquote>